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Ever see a C Clamp like this?

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  • Ever see a C Clamp like this?

    Bought this at a garage sale today. I've never seen one before.
    Click image for larger version

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  • #2
    Can't tell much about the motion of that arm affixed to the backbone of it. Does it pivot or rotate? There seems to be a channel for it to slide down toward the bottom ...is that the case?
    What about the clamping screw, is there a handle not shown for tightening it, or is that enclosed nut the only means of tightening? It is a strange looking beast.
    Lynn (Huntsville, AL)

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    • #3
      I don't know anything about it except that I would have bought it too.😁

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      • #4
        Great Find Tungsten dipper.

        Notice the shaft is not threaded, so it slides up and down and the knob on the side causes the top to pivot closed when you have the adjustment close to your item to be clamped.
        I'd call this a speed clamp since you aren't trying to turn the adjustment screw for the full stroke of the clamp.

        TX
        Mr fixit for the family
        Chris

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        • #5
          Here's the patent drawing of it-

          https://pdfpiw.uspto.gov/.piw?docid=...PTO/patimg.htm
          I just need one more tool,just one!

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          • #6
            Originally posted by Mr Fixit View Post
            Great Find Tungsten dipper.

            Notice the shaft is not threaded, so it slides up and down and the knob on the side causes the top to pivot closed when you have the adjustment close to your item to be clamped.
            I'd call this a speed clamp since you aren't trying to turn the adjustment screw for the full stroke of the clamp.

            TX
            Mr fixit for the family
            Chris
            Yes, exactly and quite clever!
            It would be interesting to see just how much clamping force it has with bit of a twist on the side knob.

            I would have bought it too, just for the uniqueness of it.
            Location: Saskatoon, Saskatchewan, Canada

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            • #7
              With all the millions of patents that have been registered, just how did you find that drawing in less than a month of searching? I find that more curious than the clamp itself.



              Originally posted by wierdscience View Post
              Paul A.
              SE Texas

              And if you look REAL close at an analog signal,
              You will find that it has discrete steps.

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              • #8
                That patent drawing makes me wonder if maybe this might have influenced the development of the Kant-Twist clamp, or maybe vice versa; I don't know which came first. A somewhat similar concept.
                Lynn (Huntsville, AL)

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                • #9
                  A fast action C clamp ! ! ! I'd buy it too for the uniqueness of it.

                  We're not up to our keesters in similar clamps so clearly the market didn't embrace the design. And really if we got down to it I can't see it being any better than an F style clamp. But that doesn't make it any less shop worthy.
                  Chilliwack BC, Canada

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                  • #10
                    Originally posted by Paul Alciatore View Post
                    With all the millions of patents that have been registered, just how did you find that drawing in less than a month of searching? I find that more curious than the clamp itself.




                    I found the same clamps in a google image search, one of which had the patent number clear enough to read. Then it was a simple matter of plugging that number into the search box here-

                    http://patft.uspto.gov/netahtml/PTO/srchnum.htm
                    I just need one more tool,just one!

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                    • #11
                      Nothing new about this in the woodworking clamp world..

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                      • #12
                        Originally posted by 754 View Post
                        Nothing new about this in the woodworking clamp world..
                        Must..........have..........pics!
                        Location: Saskatoon, Saskatchewan, Canada

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                        • #13
                          I was expecting the usual micrometer pic/joke.....

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                          • #14
                            Interesting concept but apparently the design never caught on or you would have seen more of them around. Unless it was designed as a specific holding devise for some machine.

                            JL..............

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                            • #15
                              Just wondering if it's steel or aluminum ?

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